Miscellaneous fixes to the Fedora service installer script

This allows you to build a hierarchy of properties files or for a properties file
to include default settings.

translated using native2ascii

- Severity: more severe are ROY, less severe are GB
- Replaced first-letter of severity with S# and show # dots
- Priority: higher priorityare RO, lower priority is B

I really like the 'C, 'CA' idea but that will definitely lead to translation questions. The S# approach will still generate the same complaints, but at least it is more generic.

+ Severity indicated via new character indicator and color of ticket icon on ticket list
+ Priority indicated via new priority icon and color on ticket list
+ Indexed as integers to provide sorting and maintain language neutral
index
+ Colours and indicator text controlled through CSS classes priority-<x> & severity-<x>
+ UITicketTest created to generate tickets of all types to ease debugging